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Multi Dimensional Plot using parametric analysis

Nader Fathy

Hello,

I am using parametric analysis of noise simulation with three variables (L, Vdd, Vg) in the simple circuit shown below (L=60nm to 3um, 20pts), (Vdd=0 to 1, 10pts), (Vg=0 to 1, 51pts).

The parametric analysis looped on all variables correctly as shown below, but when I try to plot the thermal noise, the output family of curves are shown for the first value of L=60nm only with all combinations of Vdd and Vg.

Is there any way I can plot all curves with all variations (L, Vdd, & Vg) in Cadence Virtuoso ADE L? 

I am using the following versions:

MMSIM Version: 13.1.1.660.isr18

Virtuoso Version: IC6.1.8-64b.500.1

irun Version: 14.10-s039

Spectre Version: 18.1.0.421.isr9

Many thanks in advance!

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  • Andrew Beckett

    Initially I thought this was just a matter of not having scrolled the legend down enough, but I can reproduce it (I decided in the end to not simulate all 10,200 points that you ran; I can reproduce it with 20x5x5=500 runs). It seems something specific to plotting the family of noise contributor results; for ADE L I only get 25 plots (out of 500) and for ADE Explorer I get 75. If I plot the total output noise, I get that for all 500 points in my sweep.

    I'm not sure why (BTW, your graph was confusing because it's plotting the id noise contribution from a pch transistor, but your circuit has an nch transistor - but I guessed the idea nevertheless).

    I filed CCR 2151853 to get this fixed; you would be best to contact customer support and ask for a duplicate to be filed on your behalf so that it can be tracked. I'm hoping it will still be prioritised anyway, but it always helps having a real customer behind it who is facing the issue.

    Regards,

    Andrew.

  • Nader Fathy
    in reply to Andrew Beckett

    Thank you so much for your help!

    I will file a duplicate DR to track this indeed.

    Kindest Regards,

    Nader Fathy

Reply
  • Nader Fathy
    in reply to Andrew Beckett

    Thank you so much for your help!

    I will file a duplicate DR to track this indeed.

    Kindest Regards,

    Nader Fathy

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